Finding the Third Proportional to 787,708 and 1,687,502

Step by Step Solution

1. Step 1: Write the proportion equation
   787,708 : 1,687,502 = 1,687,502 : x
2. Step 2: Convert to fraction form
   787,708/1,687,502 = 1,687,502/x
3. Step 3: Cross multiply
   787,708x = 1,687,502 × 1,687,502
4. Step 4: Simplify right side
   787,708x = 2,847,663,000,004
5. Step 5: Solve for x
   x = 2,847,663,000,004/787,708
6. Step 6: Final answer
   x = 3,615,125.15